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To Hans Wetzel,
Great job with your detailed review of the Technics SU-G700 integrated amplifier-DAC. I am looking for a new integrated amplifier with or without a DAC, or an all-in-one. I have the Naim Audio Uniti Atom now and it’s an excellent sounding all-in-one. However, I need a bit more power at higher volume.
I have Monitor Audio Gold 100 (5th generation) speakers, which are 4 ohms and 86dB sensitivity, and I’m thinking they would benefit from a more powerful integrated amplifier. There are lots of choices: Naim’s Uniti Nova, which is very expensive; the PS Audio Stellar Strata, which is fairly new at $2999 (US dollars) and is an all-in-one; the Technics you reviewed, to which I could add a Bluesound Node 2i; and gear from Hegel Music Systems, Simaudio Moon, and more.
I did have the Hegel Röst before the Atom but could never get the streaming function to work properly. It kept freezing in the middle of tracks while using Mconnect Player. I tried everything, then sold it and bought the Atom. Looking back now I probably should have kept it and added a streamer. Oh, well. You know what happens with this hobby.
So, to get to the point again, which integrated amp powerful enough to make my Monitor Golds sing at all volume levels would you recommend? The Golds were reviewed on [this site by Diego Estan].
I note that that your Naim makes roughly 70Wpc into 4 ohms, which isn’t a lot. The Technics doubles that -- at 140Wpc into 4 ohms you’ll get an additional three decibels of headroom, which should definitely help your cause. I really liked the Technics, so it might be a good solution for you.
Hegel, Simaudio Moon, and PS Audio are all reputable brands making good gear, but I don’t want to push you in one direction over another without knowing more about what you’re looking for in terms of sound or functionality. Given the difficulties you had streaming from Mconnect to the Röst, I would advise considering a separate streamer if you decide on a Hegel amplifier.
The only other integrated amp that I’d throw into the mix is Parasound’s HINT 6. It makes 240Wpc into 4 ohms and should ensure that your Monitor Gold 100s never run out of juice. Happy hunting! . . . Hans Wetzel
To Diego Estan,
Congratulations for your excellent and detailed review of the Triangle Borea BR08 loudspeakers. I intend to buy a pair and am soliciting your help regarding a matching amp choice. My current amplification is an old Jadis JPL preamp and JA80 power amp. Do they fit?
Please suggest other amp models. Thanks in advance for your kind assistance.
Normally, I would answer this question with a reference to our National Research Council (NRC) speaker measurements, which we produce in their anechoic chamber in Ottawa, Canada. Unfortunately, just before we were ready to measure the BR08, the pandemic hit, and the NRC has not yet returned to normal operations. Both BR08s are still with me, and we are planning on measuring them once the NRC opens up.
All I have to go with now is Triangle’s specs (92dB sensitivity, and 8-ohm nominal and 3-ohm minimum impedance), and my own experience driving the BR08s with an integrated amp of modest power, the NAD C 316BEE in my small-to-medium-sized room. The NAD is rated to deliver 40Wpc into 8 or 4 ohms. If I had access to our measurements, I could tell you at what frequency (or range of frequencies) the BR08 dips down to 3 ohms. I can tell you with confidence, however, that the small NAD had no trouble driving the BR08s to ear-splitting levels in my room, and that included thunderous bass. I would say that most solid-state amps, rated at 40 or 50Wpc and up and capable of driving a 4-ohm load, would work great with the BR08s in a small- or medium-sized room. The possibilities for amps are endless.
With respect to your JA80 tubed power amp, according to the Jadis website, the amp’s output transformer “allows an adaptation of impedance from 1 to 16 ohms.” In addition, your amp is rated at up to 90Wpc, likely into 8 or 4 ohms. I’d say that if you like your amp, you should be absolutely fine using it with the BR08s. If the BR08s are more sensitive than the speakers you have right now, you may find you notice a higher noise floor with the BR08s, but this really depends on how quiet your Jadis combo is, of which I have no experience with.
Enjoy the BR08s -- they are great speakers and represent tremendous value. . . . Diego Estan
To Hans Wetzel,
Your review of the Technics’s SU-G700 integrated amplifier-DAC was great and prompted me to order it today. Can I ask how you would compare the DAC in this amplifier to the Chord Qutest, which I already own? Your response would be greatly appreciated.
I really enjoyed my time with the SU-G700, and I hope you will, too, Roni. As a reminder, because of the way the SU-G700 amplifies signals, it digitizes all of its analog inputs using a Burr-Brown PCM1804 analog-to-digital converter (ADC), then converts them to analog basically right at the speaker outputs. There is not a typical DAC in it like you would find with most integrated amplifiers. So while you certainly could hook up your Chord Qutest to one of the amp’s analog inputs, that would result in the signal being converted from digital to analog in the Qutest, back to digital again at the input of the SU-G700, and then back to analog once more at the very end of the SU-G700’s signal path. As a matter of signal integrity and fidelity, I wouldn’t advise that on principle, which is why I suspect it makes the most sense to leave the Chord DAC on the sidelines going forward. And to answer your question directly, I don’t have any experience with Chord’s Qutest, so I can’t say how it might sound run through one of the SU-G700’s analog inputs, nor how it would compare to using the Technics’ digital inputs directly.. . . Hans Wetzel
To Hans Wetzel,
I am from India and was impressed with your honest review on PSB’s Alpha P5 [loudspeaker]. I have a query for you. I like a little forwardness in the lower treble and upper-midrange area. In this area, what do you think about the Alpha P5 and DALI’s Zensor 3? In India, both are priced similarly. Please let me know. Once again, I should say that your review was so excellent that I am planning to buy the complete PSB Alpha home-theater system.
Thank you and greetings from India,
Thanks for the kind words, Muthu. I, too, like a little forwardness in the upper mids and lower treble -- it makes recordings sound lively and engaging to my ears. In that regard, I think the Alpha P5 will deliver a small dose of that. Having never heard the DALI Zensor 3, I can’t say how the PSB might compare, but I don’t think that matters. I’m making the assumption that you are thinking about using the Alpha P5 in an Alpha-series home-theater system, in which case I think a pair could easily pull duty as front or rear channels. Personally, if I were building a home-theater system, I’d go with PSB’s Alpha line and not look back -- the value proposition is fantastic. I’m betting that, like me, you’ll be totally smitten with the Alpha P5 if you take the plunge. . . . Hans Wetzel
To Hans Wetzel,
I have read your review of the PSB Alpha P5 loudspeakers, and now I am really interested to get [a pair]. [I am] running Hegel’s H190 [integrated amplifier-DAC], so may I ask how large your listening room is, as you wrote you positioned the PSBs only 20” from [your] front wall?
What a good combination that is. Am I biased because I reviewed the Alpha P5 with Hegel’s H590? Quite possibly!
Based on my review, it looks like I had the speakers closer to the front wall of my room -- around 16” -- so I don’t know if that makes a difference on your end. My “room” is an open-format, modern living space that is 13’ wide and around 25’ long, though that length does not include the kitchen that one end of the room opens into. It’s admittedly a suboptimal arrangement for serious and studious listening, but city living has its compromises. My stereo system is placed around two-thirds of the way down the 25’ long wall, and the couch from which I listen is around 7’ to 8’ away from the speakers (depending on which speakers are in for review and what their optimal placement is). I hope that informs your decision. I should emphasize, though, I really, really liked those Alpha P5s and believe they’d be a great match for your Hegel amp. . . . Hans Wetzel
To Diego Estan,
I read your review of the NHT C 3 Carbon Fiber speakers. I am looking for a bookshelf speaker for a basement home-theater setup (50% music/50% movies). I do plan to use a single or dual subwoofers. I’m trying to keep the cost of the front three speakers to around $500 per speaker or less. Seating distance is about 8-10’. I was wondering what you thought of the C 3 with a subwoofer. Would it be a good choice for front speakers crossed over around 80Hz?
Thank you for reading my review. The C 3 Carbon Fiber is a sealed-cabinet design that I found exceled at delivering fast, punchy, dynamic bass. However, as a consequence of the sealed, relatively small cabinet, the C 3 didn’t have the greatest bass extension in my room. So, I think the C3 is a perfect candidate to pair up with a sub or two.
Since you stated that will you use the system 50% of the time for music, I’d urge you to seek out a good sealed sub to pair up with the NHTs. Sealed subs tend to have faster transient response, and should blend more seamlessly with the C 3s.
I’d also urge you to start with an 80Hz crossover, but not to limit yourself to this setting. Try experimenting with different crossover points. For example, in my two-channel system, the most significant bass null from my main speakers is at around 120Hz, so I cross them over to my dual subs at 125Hz, to make sure the subs cover the null. I hope that helps. . . . Diego Estan
To Hans Wetzel,
I read your fantastic review of the Paradigm Monitor SE Atom and wanted to get your recommendation on a setup. How superior is Paradigm’s Premier 100B bookshelf [speaker]? Is it truly worth more than double the Atom? My usage is across movies, music, and gaming. The speakers will likely be placed on the farthest ends of a wall-mounted media unit, ideally with a tweeter height of 32-ish inches.
A few of the speakers I was looking at [include]:
Any insight on this would be greatly appreciated. I’m writing from Canada, which makes the Paradigms and PSBs pretty cost competitive.
Regarding the two Paradigm bookshelf models, I absolutely think the 100B is worth more than twice the money. The build quality, design, and, most importantly, sound, all demonstrate what the extra cost is buying you. For a speaker that you’ll use for music, movies, and gaming, I’d spring for the 100B every time. Please read Diego Estan’s review of the 100B for more on it.
You also mention the Paradigm Monitor SE 6000F floorstander and the matching 2000C center speaker. I don’t know what your budget is, and if you have (or are planning) a full home theater, but as a general rule, I’d try to stay within one loudspeaker “line” when doing so. If a full Paradigm Premier home-theater rig is out of reach, I do think a full Monitor SE setup will sound pretty great. You should also check out PSB’s Alpha home-theater speaker system that Vince Hanada recently reviewed. I’m partial to PSB and the way that founder Paul Barton voices his creations, so that would be my choice at that price point.
If you’re just looking for a do-it-all pair of stereo loudspeakers , I’d opt for the three-way Monitor SE 6000F over the two-and-a-half-way DALI Oberon 5, as you get dedicated midrange and bass drivers in the former, even if the DALI looks a lot nicer. The two-way DALI Oberon 1 won’t output nearly enough bass to be a workable option as a main speaker for movies and games. . . . Hans Wetzel
To Diego Estan and Doug Schneider,
Thank you for doing such a thorough and in-depth review of the Anthem STR preamplifier and its feature set.
The STR preamp has been on my radar for over a year because my listening room has open left and right front corners (effectively no front corners), and, as a result, the room provides little bass re-enforcement for any pair of loudspeakers. I find it necessary to use a subwoofer to help generate adequate bass, even when using fairly potent tower speakers such as the Bryston Middle Ts. I am now considering increasing from one subwoofer to using two for even better bass response. The STR preamp’s comprehensive feature set with bass management and support for dual subwoofers is very appealing.
I am quite intrigued by the STR preamp and its outstanding feature set, but at this stage I am looking for advice and opinions on the STR preamp related just to system matching with my existing Simaudio Moon 400M monoblock amplifiers. I am also curious how the STR preamp might compare sonically with my much more expensive, purely analog Simaudio Moon P-7 preamplifier (discontinued in 2013). I don’t have an opportunity to try or borrow an STR preamp at this time, so below are two questions (items 1 and 2):
1) Gain matching: my Simaudio Moon 400M monoblock amplifiers have a higher-than-typical gain specification of 36dB (most power amps are rated about 29dB). Might the STR preamp’s analog gain of 18.6dB (as measured by Diego for the balanced outputs) be a bit too high to be a good match for my 36dB Moon monoblocks?
Or worded differently, might the combined gains (18.6dB and 36dB) of the STR preamp and my Moon 400M monoblocks result in very little useable adjustment range on the volume control before it becomes far too loud? To compare, the Moon P-7 fully balanced preamplifier that I am using with these monoblocks has a gain specification of 9dB, and the new Moon Neo 390 preamp-DAC-streamer from the same Simaudio product line as the 400M monoblock has a gain specification of 10dB for the balanced outputs. I realize that the STR preamp is designed to pair with the matching Anthem STR power amplifier. Has Anthem indicated what sort of volume control implementation is being used (potentiometer, chip, R2R ladder, etc.)?
2) Analog performance: Diego’s review of the STR preamp indicates that it was indistinguishable from his well-regarded McIntosh preamp, so obviously the Anthem STR’s analog performance is really good.
However, any “guestimate” how the STR preamp may sonically compare to my older but almost-twice-as-expensive Moon P-7 fully balanced preamplifier? (My Moon P-7 preamp was purchased secondhand, but it was very well regarded as an analog preamplifier when still current in 2013.) Doug separately reviewed the Moon P-7 preamp and 400M monoblocks several years ago. This is why I have also included Doug in this conversation.
Thanks for the kudos and reading my review. I must admit, the STR consumed me as a reviewer for a few months. There are so many features and so much versatility that my time with it yielded not only the review, but a few accompanying articles as well.
My short answer is that if you are going to be using dual subs, the STR is a good turnkey solution for you, offering both bass management and room EQ.
Now, to specifically answer both of your questions:
First, the 18.6 dB of gain I measured was across the hot and cold pins of the balanced output. While there is no standard way of doing this, most manufacturers would report gain from single-ended input to singled-ended output. It’s therefore perhaps fairer to say the STR has 12.6dB of gain in analog mode. For example, my McIntosh C47 is rated at 15dB of gain, but if I measure across the balanced output, I measure 21dB.
I wouldn’t worry about having too much gain and not enough volume adjustment. The STR provides 206 volume steps, in 0.5dB increments. Due to the extra gain, at normal volume levels, you will likely hear a bit more noise/hiss with your ear near the tweeter compared to your Moon preamp, not only because of the gain difference, but because Simaudio makes very, very quiet electronics. I’m willing to bet, however, that with your average-sensitivity speakers, at normal volume settings, you will hear absolutely no noise from your seated position. While I can’t tell you precisely what chip Anthem uses for its volume control (they have not given me permission to do so), I can tell you that it’s a well-regarded R2R-type integrated circuit. Attenuation is digitally controlled, but performed in the analog domain. Also consider that the STR offers up to +/-20dB of gain trim, in 0.5dB increments, on any input, should you choose to use it.
Finally, even if there were subtle differences in sound between both preamps, these would absolutely pale compared to the sonic benefits that the STR would bring in terms of bass management and EQ. Of course, you can also opt to keep your Moon preamp and explore external solutions for bass management and room EQ, which is what I did before I knew the STR existed. But you may encounter a steep learning curve with that approach, so it depends if you’re into doing the required homework/research.
I hope that helps. . . . Diego Estan
I’m not sure if you’re aware, I wrote about the STR preamplifier on SoundStage! Hi-Fi this month. As a result of my experiences with the STR, I agree with Diego that with what you want to do with speakers and subwoofers, the STR is the ideal way to go as a turnkey solution. I also can’t add much more to what he already said, except this: I am more wary than he is of the gain issue that you pointed out, not for volume control, but for potential for increased noise. I’ve had noise issues with some preamplifiers and amplifiers I’ve reviewed over the years, so it’s something that jumps to mind when someone talks about matching a certain preamplifier to an amplifier that’s out of the norm.
We measured the Simaudio Moon 400M when I reviewed it, which revealed the very high gain you mentioned -- 36.2dB on both the single-ended and balanced inputs. That’s a lot more gain than with most amps, which could result in excessive noise from a high-gain preamplifier. Not surprisingly, Simaudio’s preamps have lower gain. To know if it’ll be an issue with the STR, though, you’re really going to have to connect the STR to your 400Ms in order to find out. I know you said you couldn’t right now, which I understand, but, to me, that’s the prudent thing to do, just to see if the noise is an issue and you’re making the best choice. After all, if noise isn’t an issue, and you like everything else about the STR, including its second-to-none feature set, that should go a long way toward making the decision for you with your current system goals. . . . Doug Schneider
To Diego Estan,
How are you? I got your e-mail address from an article I read [about the DALI Opticon 8 loudspeakers.]
I am interested in getting a pair of these DALI speakers and would like to ask you your honest opinion if these are any good. I live in the Caribbean on the island of Trinidad and we have no way of auditioning these, hence relying on other people like yourself. I have several questions:
Can these speakers work in a room 19’ long x 13’ wide, with one wall 10’ high and the other 16’ high? I would say my listening is moderate, maybe sometimes loud for a short period of time, and I sit roughly 11’-12’ away. I could move the sofa closer if needed (10’).
Do the DALIs produce enough bottom end (bass) or [do they] require an external subwoofer?
I would like to pair these speakers with a PrimaLuna EVO 400 tubed integrated amplifier and EVO 100 DAC, or a Parasound solid-state A 21+ amplifier and P 6 preamplifier (DAC included). Can I drive a 4-ohm speaker with an 8-ohm amplifier? Are there any downsides here?
Would you say that these Opticon 8s are good value for the money? I could also consider a pair of satellites using external subwoofers. I currently have a pair of SVS SB-2000 subwoofers new in boxes.
I look forward to hearing from you.
Thanking you in advance,
Trinidad and Tobago
Thanks for reading my review. I’ll try to answer all your questions, so here goes:
Yes, a pair of DALI Opticon 8s should have no issues working in a room your size (my room is a bit smaller at 15’W x 12’L x 8’H). One of the DALIs’ strengths in my room was their bass performance -- I was satisfied. I would wager most listeners would not go looking for a sub in a room your size with the DALIs, but, this is only an educated guess -- bass performance is very room and speaker-placement dependent. So, you shouldn’t need a sub, but I personally feel that just about any speaker will benefit from the addition of one or two subs. I happen to demand very good bass from my system.
With the amp choices you mentioned, you should be fine in terms of power. We measured the DALIs at 88dB sensitivity (2.83V/m). Sitting in a room your size, 10’ away, you should be able to achieve 102dB SPL (quite loud) with even the 70Wpc from the PrimaLuna. Choosing between the Parasound and PrimaLuna will be a personal choice -- I haven’t heard either. I’m not personally a fan of tubes, but, of course, many audiophiles are.
One thing I’ll mention about the Parasound combo (other than ample power) is that the P 6 offers full bass management. If you opt to use your subs, having bass management will be invaluable, and will help to bring your system’s performance to a whole new level. I recommend you unbox the SB-2000s and try.
Regarding driving 4-ohm speakers with an amp rated at 8 ohms. First, a speaker’s impedance is referred to as its nominal impedance, because it varies with frequency. The spec you see (e.g., 8 ohms or 4 ohms) is more like an average. In the case of the DALI Opticon 8, we measured its impedance curve and found it to hover around 4 ohms between 100Hz and 500Hz. In the bass, it never dips below 6 ohms. In the treble, it rises to between 6 and 8 ohms. Overall, I’d call the DALI Opticon 8 a relatively easy 4-ohm load to drive. Both amps you mentioned can drive 4-ohm loads without issue (the PrimaLuna has both 4- and 8-ohm outputs, while the Parasound is specified at 400Wpc into 4 ohms).
I hope that helps. . . . Diego Estan
To Hans Wetzel,
What [is a good integrated amplifier] for Q Acoustics’ 3050i floorstanding speakers? €700-€1200? Thank you.
You have several choices from reputable manufacturers. Audiolab’s 6000A is a good option, as is Arcam’s SA20, and you could look at Cambridge Audio’s CXA61 and CXA81 (though the CXA81 might be just beyond €1200 in Slovakia). The first integrated that jumped to my mind, however, is the NAD D 3045. It’s a phenomenal little amplifier that has tons of connectivity, as well as more than enough power to push a pair of 3050i towers to really high output levels. I don’t think you can go wrong with any of these options, but I’d personally opt for the NAD. . . . Hans Wetzel
To Diego Estan,
I just read your detailed and informative review of the Audiolab 6000A integrated amplifier. I have an NAD C 316BEE, which I was about to replace/upgrade with the 6000A, but after reading your review, I am not so sure anymore whether this is money well spent. Based on your review, it seems that the 6000A can easily hold its own versus some high-end equipment, but since the sound of the NAD and the Audiolab are virtually identical, by extension this would then also apply to the C 316BEE, correct? Just to be clear, I am only talking about sound, not appearance, build quality, or features like DAC, etc. If I connect a Bluesound Node 2i to either amp, using the Bluesound DAC, there should be no noticeable difference. Perhaps I should save more money and buy a truly high-end unit, such as the Hegel H90. What do you think? My speakers are Wharfedale Evo 4.2 stand-mounts, my room is approximately 250 square feet, and I sit approximately 10’ from the speakers. I listen to music at moderate levels (3 to 4 on scale from 1 to 10).
If it wasn’t already obvious from my review, I’m quite objectively minded. I do not believe that two competently designed solid-state amps, operated well within their limits, playing level-matched under blind conditions, should sound different from one another. If real differences do emerge, they would be of the very subtle variety. Although I cannot speak to the Hegel directly (I haven’t heard it), I believe this generally holds true, regardless of price point.
It’s important to consider, however, what I mean by “well within their limits.” Amps can definitely sound different when operated close to the margins of their limits. In the case of the NAD and Audiolab, both have similar power output into 8 ohms (40Wpc for the NAD vs. 50Wpc for the Audiolab), but the Audiolab can deliver quite a bit more into 4 ohms (75Wpc versus 45Wpc for the original C 316BEE, and 60Wpc if you have the C 316BEE V2).
Your speakers have a moderate sensitivity (87dB), and, according to Wharfedale, don’t dip below 4 ohms (they say 8-ohms nominal, but I couldn’t find an impedance curve online). With 40Wpc, 10’ away, and assuming your speakers are placed within 2’-4’ from the walls, you should be able to achieve almost 100dB SPL at the listening position. Considering your claim of moderate listening levels, 40Wpc into 8 ohms should be plenty. Of course, you may have other considerations I’m not aware of, such as upgrading to more power-hungry speakers in the future, moving to a bigger room, or listening habits changing.
So, in terms of sound in your current set-up, your NAD integrated amp is fine, and you shouldn’t expect a real upgrade in sound quality with a new amp. Of course, if you go in expecting an upgrade, you may in fact hear one -- that is how expectation bias works.
Surprisingly, this doesn’t mean you shouldn’t buy the Audiolab 6000A. I really enjoyed my time with it. Its build quality is superb and belies the relatively modest price, the buttons and volume control have a great feel and inspire confidence, plus there’s a quality built-in DAC with Bluetooth connectivity, while the C 316BEE doesn’t have at DAC at all. And don’t forget the most important reason of all: do you want the Audiolab 6000A? If you do, and you can afford it, then you should buy it!
In summary, my general advice if shopping for an integrated amplifier is to figure out how much power you need based on your loudest preferred listening levels (you can use an online calculator like this one at myhometheater.homestead.com/splcalculator.html), then consider your speaker’s impedance (if 4 ohms or less, look for an amp that can handle lower impedances easily), and, finally, choose based on features, build quality, looks, feel, reputation, warranty, etc.
If you’re looking to improve or change the sound of your system significantly, look to the electronics last and focus first on speakers, subwoofers, and their placements, as well as room treatment and room EQ. Thanks for reading my review. . . . Diego Estan